As indicated in the APLNext CSE Update Document [http://forum.apl2000.com/viewtopic.php?f=27&t=1099], if the Microsoft .Net Framework 4.6.1 is installed on the target workstation, certain features of the APL+Win v15 and prior CSE will not operate properly. Pre-compiled, file-based .Net assemblies can be successfully loaded and successfully used by the prior CSE versions in .Net 4.6.1, however the functionality of in-memory assemblies using C# scripts is limited in .Net 4.6.1.

This due to a Microsoft deprecation of the support for in-memory .Net assemblies which directly interface with a Win32 [e.g. APL+Win] application domain.

The APLNext CSE included with APL+Win v16 resolves this issue by implementing a new CSE architecture. The new APLNext CSE architecture in APL+Win v16 uses an intermediary, pure .Net, self-hosted SignalR server as the application domain which creates the APLNext instance. APL+Win communicates with the SignalR server via a TCP/IP port# selected by the APL+Win programmer as an argument to the CSE 'Init' or 'InitSTA' methods.